Total tearing of the eyes may be caused by obstruction of the tear duct, blepharitis, uveitis, and so on. 1. Lacrimal duct obstruction: when affected by inflammation, trauma, nasal lesions and other factors, it will lead to the obstruction of the tear duct’s lacrimal punctum, lacrimal sac, nasolacrimal duct and other parts of the lacrimal duct, resulting in the patient’s tear spillage phenomenon. 2. Blepharitis: most of them are caused by bacterial infections and may also be related to malnutrition, resulting in the patient’s eyes always watering, accompanied by eye itching, stinging and burning sensation. 3. Uveitis: If affected by injury, infection, autoimmune factors, etc., it will lead to the patient’s eyes always tearing, accompanied by pain, blurred vision, vision loss, eye redness and other symptoms. It is recommended that patients go to the hospital in time, under the diagnosis of the doctor, according to the patient’s condition, targeted treatment, life should be reasonable use of the eyes, to promote the recovery of the disease.